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Life Processes Class 10 Science MCQ Questions with Answers

Life Processes Class 10 Science MCQ Questions with Answers has been provided by JEE Wallah to help students score good marks in their CBSE and Competitive exams. CBSE Class 10 Science MCQs Chapter 5 Life Processes is very important as these questions are asked in the Board Exam. Students need to have a strong conceptual understanding of the chapter; only then could they be able to answer Life Processes Class 10 Science MCQ Questions with Answers. 

Students can solve Class 10 Science Life Process Multiple Choice Questions with Answers to know their preparation level. MCQ Questions for Class 10 Science Chapter 5 Life Processes will help you check whether you have grasped the conceptual learning or not. Scroll below and start solving Life Processes Class 10 Science MCQ Questions with Answers.

MCQ Questions for Class 10 Science Chapter 5 Life Processes

Life Processes Class 10 Science MCQ Questions with Answers

Are you looking for MCQ Questions for Class 10 Science Chapter 5 Life Processes with Answers so that you can focus on your study to better perform in the upcoming CBSE Class 10 Board examination? If so, you are at the right place, our subject experts have MCQs on Life Processes Class 10 PDF which will boost up your preparation level.

Life Processes Class 10 MCQ Online Test will help you revise the complete chapter in few minutes. Life Processes Class 10 MCQ with Answers can be solved only by having proper conceptual knowledge, we are giving you some tips that can help you solve MCQ Questions for Class 10 Science Chapter 5 Life Processes : Practice Life Processes Class 10 Science MCQ Questions with Answers as much as possible !

CBSE Class 10 Science MCQs Chapter 5 Life Processes with Answer

1. Which of the following statements about the autotrophs is incorrect?
(a) They synthesis carbohydrates from carbon dioxlde and water in the presence of sunlight and chlorophyll.
(b) They constitute the first trophic level in food chains.
(c) They convert carbon dioxide and water into carbohydrate in the absence of sunlight.
(d) They store carbohydrates in the form of starch.

Answer (c) They convert carbon dioxide and water into carbohydrate in the absence of sunlight.

2. The autotrophic mode of nutrition requires:
(a) chlorophyll
(b) sunlight
(c) carbon dioxide and water
(d) All of these

Answer(d) All of these

3. The internal (cellular) energy reserve in autotrophs is
(a) protein
(b) fatty acid
(c) starch
(d) glycogen

Answer(c) starch

4. Autotrophic organisms include :
(a) bacteria and virus
(b) green plants and some bacteria
(c) bacteria and fungi
(d) green plants and all bacteria

Answer(b) green plants and some bacteria

5. The site of photosynthesis in the cells is:
(a) Chloroplast
(b) Mitochondria
(c) Cytoplasm
(d) Protoplasm

Answer(a) Chloroplast

6. Root cap has no role in water absorption because:
(a) It has loosely arranged cells
(b) It has no direct connection with the vascular system
(c) It has no hairs
(d) It has no cells containing chloroplasts

Answer(c) It has no hairs

7. Vocal cord occur in :
(a) bronchial tube
(b) pharynx
(c) glottis
(d) larynx

Answer(d) larynx

8. What is the mode of nutrition in fungi?
(a) Heterotrophic
(b) Autotrophic
(c) Parasitic
(d) Saprophytic

Answer(d) Saprophytic

9. How many pairs of salivary glands are found in humans ?
(a) two
(b) four
(c) three
(d) six

Answer(c) three

10. Blood vessel carry blood from lungs to heart through :
(a) Pulmonary vein
(b) Pulmonary artery
(c) Coronory artery
(d) None of these

Answer(a) Pulmonary vein
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11. Which of the following structures is involved in gaseous exchange in woody stem of a plant?
(a) lentical
(b) stomata
(c) guard cells
(d) epidermis

Answer(a) lentical

12. Which cell organelle is involved in breakdown of glucose to produce energy for metabolic activities ?
(a) Chloroplast
(b) Endoplasmic reticulum
(c) Mitochondria
(d) Golgi body

Answer(c) Mitochondria

13. From which structure, the free oxygen gas produced during photosynthesis is released ?
(a) epidermis
(b) stomata
(c) guard cells
(d) cortex

Answer(b) stomata

14. Villi present on the internal wall of intestine help in the
(a) breakdown of proteins
(b) emulsification of fats
(c) absorption of digested food
(d) digestion of carbohydrates

Answer(c) absorption of digested food

15. What is the final product of photosynthesis?
(a) protein
(b) fat
(c) starch
(d) mineral salt

Answer(c) starch

16. Major function of contractile vacuole is:
(a) osmoregulation
(b) Excretion
(c) Circulation
(d)  All of these

Answer(a) osmoregulation

17. Urea is formed in:
(a) spleen
(b) liver
(c) lungs
(d)kidney

Answer(b) liver

18. Which of the following is not a disorder of the circulatory system ?
(a) Arteriosclerosis
(b) Atherosclerosis
(c) Angina
(d) Arthritis

Answer(d) Arthritis

19. Which of the following is responsible for the transport of water and minerals from roots to aerial parts of the plant ?
(a) xylem
(b) cortex
(c) phloem
(d) Both a and c

Answer(a) xylem

20. Excretion is carried out by nephridia in:
(a) earthworm
(b) cockroach
(c) amoeba
(d) human

Answer(a) earthworm
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21. In which of the following group/ groups of animals, heart does not pump oxygenated blood to
different parts of the body?
(a) pisces only
(b) amphibians only
(c) amphibians and reptiles only
(d) pisces and amphibians

Answer(a) pisces only

22. The filtration units of kidneys are called
(a) nephrons
(b) neurons
(c) urethra
(d) ureter

Answer(a) nephrons

23. Name the substances whose build up in the muscles during vigorous physical exercise may cause
cramps?
(a) Pyruvate
(b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy
(d) Ethanol + Carbon dioxide + Energy

Answer(b) Lactic acid + Energy

24. When air is blown from mouth into a test – tube containing lime water, the lime water turned milky
due to presence of :
(a) nitrogen
(b) oxygen
(c) water vapour
(d) carbon dioxide

Answer(d) carbon dioxide

25. During contraction of heart, what prevents back flow of blood?
(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of these

Answer(a) Valves in heart

26. The contraction and expansion movement of the walls of the food pipe is called:
(a) digestion
(b) perstaltic movement
(c) transpiration
(d) translocation

Answer(b) perstaltic movement

27. The process by which blood is cleared of metabolic wastes in case of kidney failure is called
(a) filtration
(b) transplantation
(c) dialysis
(d) artificial kidney

Answer(c) dialysis

28. Trachea do not collapse when there is not much air because they are:
(a) supported by larynx
(b) having cartilaginous rings
(c) have valves
(d) thick and muscular

Answer(b) having cartilaginous rings

29. Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in
the saliva ?
(a) Fats breaking down into fatty acids and glycerol
(b) Absorption of vitamins.
(c) Proteins breaking down into amino acids
(d) Starch breaking down into sugars

Answer(d) Starch breaking down into sugars

30. Amoeba shows following kind of nutrition
(a) parasitic
(b) holozoic
(c) saprotrophic
(d) autotrophic

Answer(b) holozoic
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31. The exit of unabsorbed food material is regulated by
(a) anus
(b) liver
(c) anal sphincter
(d) small intestine

Answer(c) anal sphincter

32. When a few drops of iodine solution are added to rice water, the solution turns blue- black in
colour. This indicates that rice water contains:
(a) simple protein
(b) starch
(c) complex protein
(d) fats

Answer(b) starch

33. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
(a) nucleus
(b) chloroplast
(c) mitochondria
(d) cytoplasm

Answer(c) mitochondria

34. Glycolysis process occurs in which part of the cell?
(a) nucleus
(b) cytoplasm
(c) mitochondria
(d) chloroplast

Answer(b) cytoplasm

35. The respiratory pigment in human beings is:
(a) carotene
(b) chlorophyll
(c) haemoglobin
(d) mitochondria

Answer(c) haemoglobin

36. Name the pores in a leaf through which respi-ratory exchange of gases takes place
(a) stomata
(b) vacuoles
(c) xylem
(d) lenticles

Answer(a) stomata

37. Name a circulatory fluid in the human body other than blood
(a) plasma
(b) lymph
(c) RBC
(d) platelets

Answer(b) lymph

38. A blood vessel which pumps the blood from the heart to the entire body
(a) haemoglobin
(b) vein
(c) capillary
(d) artery

Answer(d) artery

39. Name the tube which connects the kidneys to the urinary bladder
(a) urethra
(b) nephron
(c) tubule
(d) ureter

Answer(d) ureter

40. Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg
(b) 160/80 mm of Hg
(c) 120/60 mm of Hg
(d)180/80 mm of Hg

Answer(a) 120/80 mm of Hg

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